* Hydrogen (H): About 70.6% of the Sun's mass is hydrogen.

* Helium (He): About 27.4% of the Sun's mass is helium.

These elements make up the vast majority of the Sun's composition. The remaining 2% is composed of trace amounts of heavier elements like:

* Oxygen (O)

* Carbon (C)

* Neon (Ne)

* Iron (Fe)

* Silicon (Si)

* Magnesium (Mg)

These heavier elements were formed through nuclear fusion in the Sun's core. The Sun's nuclear fusion process is a continuous cycle where hydrogen atoms fuse to form helium, releasing enormous amounts of energy in the process. This energy is what powers the Sun and provides light and heat to our planet.